well i decided to do a few pulls with my truck in sig. let me know what you think..
had some ideas i was pondering and wanted to see what you all thought. so far i have been pulling in drive, 4 low, overdrive off, tow haul on. to me this should be letting it shift to third. but not locking im assuming. my rpms stay anywhere from 3200 to 3500 down track. this video pulled me off a 6th place out of 19 trucks.
https://www.youtube.com/watch?v=a-cU...layer_embedded

my question is i keep hearing everyone say to run in 2nd gear with lockup switch. would i be better off? or should i stay in drive with tow haul on and overdrive off.